Kia Motors America at 111 Peters Canyon Road, Irvine, California.

It's awful that Kia is allowed to make promises that they do not honor. The customer service representatives assures you that your matter will be handled to get you off the phone and it's never done. I will never buy from Kia again

Horrible customer service! One year ago Kia replaced the transmission in my 2011 Optima Hybrid. Ever since that change I have never gotten the mileage I got before the problem. Used to get 39-41 now I get 29-32 very consistently. I have taken it back several times, every time I get the oil changed or bring it in for service I have them document the MPG on the display. After elevating it in their corporate CS department they arranged a road test with the service manager that I road along on. He drove the car on the freeway on an incline for a few miles away from the shop, got off, turned back and pretty much coasted all the way back to the shop recording 39.1 MPG. And to quote his words while driving it he had to feather the gas to keep it in the EV range. I took it to another dealership to have a road test done, this guy takes it on the freeway and is driving to maintain the EV range. We were doing less than 55 in the slow lane behind a truck, he was hyper-miling to get the MPG up. Corporate customer service (there is not support)has closed the case and I have no recourse. It cost me more every day to run my vehicle and they just don't care. I paid this car off early with the intent of buying a newer Kia, won't happen now.